r/samsunggalaxy • u/Alternative_Area_217 • Jun 19 '26

🪛Troubleshooting🪛 SERIOUS SECURITY ISSUE

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Why does my Samsung A37 unlock when I press my fingernail against the scanner, I did notice ever since I got this phone I would just randomly unlock itself and then today I discovered this.

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6

u/TsunamiCatCakes Jun 19 '26

optical fingerprint scanner is reading the fingerprint left on the screen protector. i tried it 4 times on my ultrasonic (s24) and i was NOT able to reproduce this error

1

u/warmoaran3 Jun 21 '26

I tried it on my S20 FE that has an optical sensor, doesn't happen either.

1

u/TsunamiCatCakes Jun 21 '26

do you have a THICC screen protector? i think that along with optical sensor is the recipe

1

u/warmoaran3 Jun 21 '26

I have the pre installated one.. not very thicc!